The scratch resistance of tinplate was measured by using modified QHQ type pencil hardness test appratus which is designed for organic paint containg.是什么意思_The scratch resistance of tinplate was measured by using modified QHQ type pencil hardness test appratus which is designed for organic paint containg.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句